WARNING: UNPROTECTED PRIVATE KEY FILE! error message
Was trying to ssh into my Amazon Web Services EC2 instances yesterday
ssh -i ec2-webserver.pem root@ec2-***.compute-1.amazonaws.com
and encountered this funky error message :
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: UNPROTECTED PRIVATE KEY FILE! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Permissions 0440 for 'ec2-webserver.pem' are too open.
It is recommended that your private key files are NOT accessible by others.
This private key will be ignored.
bad permissions: ignore key: ec2-webserver.pem
Password:
Upon further investigation, found out that this problem is actually caused by OpenSSH client security policy rather than AWS EC2.
To fix this error, change the permission of the /.ssh directory to 0700 and the ec2-webserver.pem file to 0600
chmod 0700 $HOME/.ssh/
chmod 0600 $HOME/ec2-webserver.pem
Try the ssh command again and bingo! No more WARNING: UNPROTECTED PRIVATE KEY FILE! error message
By Adam Ng
IF you gain some knowledge or the information here solved your programming problem. Please consider donating to the less fortunate or some charities that you like. Apart from donation, planting trees, volunteering or reducing your carbon footprint will be great too.
Advertisement
Tutorials
+6k Unix/Linux : How to open tar.gz file ?
+19.3k Golang : Delete item from slice based on index/key position
+16.7k Golang : Merge video(OpenCV) and audio(PortAudio) into a mp4 file
+14k Golang : How to check if a file is hidden?
+5.5k Golang : fmt.Println prints out empty data from struct
+5.5k Javascript : How to loop over and parse JSON data?
+16k Golang : Update database with GORM example
+40.3k Golang : UDP client server read write example
+8.4k Golang : Configure Apache and NGINX to access your Go service example
+17.6k Golang : Linked list example
+31k Golang : Download file example